Question

In 1983, one could buy a model radio-controlled airplane for $11.50 each. Those same planes are available today and the price increased at exactly the rate of inflation. If the CPI today is 220.5 and in 1983 was 105, what is the price of the airplane today?

Answer 1

The price of the airplane today is $24.15

Step-by-step explanation:

In this question, we proportionate the items

Since, for the 1983 year, the price is given and the CPI for today and in 1983 is also given.

So, the price of the airplane would be

= CPI today × (Price in 1983 ÷ CPI in 1983)

= $24.15

We divide the 1983 price with the 1983 CPI and then multiply the CPI to get the price for today.